Assembly table - mobility vs levelling

I would use regular casters adjust it so it’s a hair below and level with the saw then live with it the rest of the time. You can shim the casters or top to get the table in the same plane as the saw table. As long as you always put it back the same way, in the same spot, it will be level. They do make height adjustable casters if you really want to go that route.

-- Rick M, http://thewoodknack.blogspot.com/

For a more difficult to make idea this is what I might do. Keep in mind I have a welder.

I’d purchase some threaded rod and weld up some large nuts on metal plates so I could mount them to outside of each leg. Then I’d weld a metal pad to the end of the threaded rod, screw it into the mounted nut, weld a nut on the top end of the rod and use a ratchet wrench to turn them down to the floor after each wheeled move.

Or you could purchase the leveling feet you have a link to an add the nuts to the top. They don’t look that long though.

-- The smell of wood, coffee in the cup, the wife let's me do my thing, the lake is peaceful.

www.zambus.com make really nice leveling casters that would solve your problem

Check out a guy on you tube called the Down to Earth Woodworks—Steve Johnson. He built an outfeed table with casters but he inserted a leveling device at the top where his torsion box meets the legs. Pretty clever solution. Easier to watch than for me to describe. I think this link will take you to Part 5 of a six-part series where he describes the leveling.
https://www.youtube.com/watch?v=E4v3RoldOuc

There are several builds of workbenches and tool stands where the casters are on a board that is hinged to legs. So, table sits on legs/leveling feet until moving is needed. Then you swing casters down and lock board in place.

Here’s one example...

Also, not sure what is too expensive but I put casters on my workbench and they work great.

Depends alot on how out of whack the floors are, my outfeed goes on top af a workmate and I’ve found it’s just easier to 1/8th or so below the level of the table. First tried to have it dead nuts flat & level to the table and it would just take forever to adjust. Being a bit below the top of the TS has not created any issues for me and it’s alot less hassle

-- I've decided 1 mistake is really 2 opportunities to learn.. learn how to fix it... and learn how to not repeat it